PATH

Evaluation of the ACC Vehicles in Mixed Traffic: Lane Change Effects and Sensitivity Analysis

Ioannou, Petros
Stefanovic, Margareta
2003

Almost every automobile company is producing vehicles with Adaptive Cruise Control (ACC) systems that allow a vehicle to do automatic vehicle following in the same lane. The ACC system is designed for driver comfort and safety and to operate with manually driven vehicles. These characteristics of ACC were found to have beneficial effects on the environment and traffic flow characteristics [1, 2, 3] by acting as filters of a wide class of traffic disturbances. It has been argue that the smooth response of ACC vehicles to high acceleration disturbances or large position errors creates large...

Advanced Public Transportation Systems: A Taxonomy And Commercial Availability

Khattak, Asad
Noeimi, Hisham
Al-deek, Haitham
Hall, Randolph
1993

The main objectives of this study are to: 1) systematically classify new transit technologies and their impacts, 2) use the classification structure for exploring availability of new transit technologies, and 3) introduce technology developers to the California Advanced Public Transportation System (CAPTS) program. A structure is developed and applied for investigating the availability of new technologies in the market. The classification structure is based on a conceptualization of how technology attributes and technology performance will impact travelers and operators. After developing a...

Highway Traffic Data Sensitivity Analysis

Lu, Xiao-Yun
Coifman, Benjamin
2007

This report is divided into two parts:•Part I - Highway Traffic Data Sensitivity Analysis in Systems Approach. This work has been conducted by Dr. Xiao-Yun Lu at California PATH, U. C. Berkeley.•Part II - Empirical and Analytical Results for Sensitivity to Loop Station Spacing. This work has been conducted by Benjamin Coifman in Civil Engineering, Ohio State University.Since the aspects of the problem considered and approaches adopted by the two are different, it is thus necessary to separate the report into two parts. Each part is self-content.

U.S. Shared-use Vehicle Survey Findings: Opportunities and Obstacles for Carsharing and Station Car Growth

Shaheen, Susan A.
Meyn, Mollyanne
Wipyewski, Kamill
2003

Shared-use vehicle services provide members access to a vehicle fleet for use on an as needed basis, without the hassles and costs of individual auto ownership. From June 2001 to July 2002, the authors surveyed 18 U.S. shared-use vehicle organizations on a range of topics, including organizational size, partnerships, pricing, costs, and technology. While survey findings demonstrate a decline in the number of organizational starts in the last year, operational launches into new cities, membership, and fleet size continue to increase. Several growth-oriented organizations are responsible for...

Lessons in Network Management: Cross-Industry Comparisons and Implications for ITS Development

Horan, Thomas A.
Reany, William
2002

This report provides an historical and case study analysis of policies aimed toward the management of complex systems, with specific reference to the role of public policy and technology in balancing surface transportation system demand and supply. Three case studies form the crux of the paper energy management, airport management, and Internet growth. Lessons from these case studies are then applied to the circumstance of ITS deployment to manage surface transportation in California. Following an introductory section (1), section 2 provides an historical analysis of the forces with have...

Pedestrian and Bicycle Safety Evaluation in a SMART Corridor

Ragland, David R., PhD
O’Connor, Terri
2008

The San Pablo/I-80 corridor is a “SMART” transportation corridor that extends about 20 miles along the eastern shore of the San Francisco Bay. The corridor uses Intelligent Transportation System (ITS) technologies to increase and enhance transportation mobility.The goal of the SMART Corridor Plan was to improve vehicle mobility throughout the corridor. Since the plan focused almost exclusively on vehicular traffic, achieving these goals has the potential to raise the risk of injury to pedestrians and bicyclists without thorough analysis of the overall effects of the SMART corridor...

An Assessment of Opportunities for Bus Rapid Transit in the San Francisco Bay Area

Miller, Mark A.
2005

This report presents the findings from an investigation of opportunities to implement bus rapid transit systems in the San Francisco Bay Area with a focus on bus transit routes that travel on the state’s highway system. A primary component of this project has been the consideration of inter-connectivity and regional aspects of bus rapid transit systems deployment in the Bay Area. We examined approximately 200 bus transit routes in the Bay Area that lie on the state highway system from which five routes were identified as likely candidates for bus rapid transit implementation. Two of the...

High Occupancy Vehicle (HOV) System Analysis Tools: Statewide HOV Facility Performance Analysis

Jang, Kitae
Chan, Ching-Yao
Du, Yao-Qiong
Chu, Lianyu
Yang, Ming-Hsun
Recker, Will
2012

The two most common types of high occupancy vehicle (HOV) lanes in California are continuous access, prevalent in Northern California, and buffer-separated limited access, prevalent in Southern California. This report describes the evaluation of operational performance of HOV facilities in several regions in California with different access types as well as a before-after comparative study of California facilities where access types were converted in recent years. A set of performance measures were defined and selected to indicate how well the HOV facilities achieve intended goals –...

The AHS/Street Interface; Effects of Capacity Concentration on System Performance: Phase 1 Final Report

Hall, Randolph
2001

This report provides Phase 1 results for MOU 386, “The AHS/Street Interface, Effects of Capacity Concentration on System Performance.” Additional results from this project can be found in PATH Working Paper 2000-26. Within this paper, strategic issues in Automated Highway Interface design are discussed, including creation of interface components and design alternatives, with emphasis on interchange separation and highway orientation. The report also discusses land use issues associated with interchange construction.

Evaluate High Potential Areas for Overweight Trucks and Truck Accidents in California

Huang, Jihua
Chan, Ching-Yao
Jang, Kitae
2013

To increase operational efficiency, reduce congestion, and meet federal requirements concerning truck size and weight limits, the California Department of Transportation (Caltrans) is exploring new plans and feasible projects designed to increase enforcement and reduce pavement damage due to overweight trucks. Installation of Weigh-in-motion (WIM) systems or Virtual Weigh Station (VWS) by Caltrans will provide information to the California Highway Patrol (CHP) that they can use to better enforce commercial vehicle laws in those areas. To support the effective deployment of WIM/VWIM...